They were from Sweden, they were pioneers of DIY culture, they jammed with force and purpose for 40 minutes back when “legendary” SF groups or German kraut rock bands were still struggling to get out of the upper single digits with dignity; they traveled with organic food they grew themselves, and cooked for everyone they played to. 

“Hearing Scandinavian extraterrestrial outer limits band Trad Gras Och Stenar in the early 70’s must have been a mind fuck. The sounds this band was able to create is nothing short of deathless. Their two Tall Records releases, Djungelns Lag (1972) and Mor Mors (1973), are miraculous slabs of burnt improv that had limited pressings and are considered as valuable as Rhodium by collectors today... Bands like Chrome, Spacemen 3, Bardo Pond, Sun City Girls, and Endless Boogie would not be with these Scandinavian heathens. Much like Sun Ra and Don Cherry, Trad Gras Och Stenar expanded the atmosphere with their music and by doing so, made room for so much more to occur.” – The Big Takeover